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Old 03-05-2021, 05:28 PM   #1
Gixxerguy86
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Join Date: Apr 2015
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Experience: 10+ years
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1986 GSXR 815
2002 Bandit 1200
GSXR 1137cc Frankendragster (SOLD)
various other oil-cooled Suzukis
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air-cooled honda info needed

for those who build their own motors and have experience with the old Honda CBX, CB-series, etc. I need your input

I am building a CB750 motor for one of my buddies and it's going to be a bit of a frankenstein. I've read some different forums online about people dropping CB900 pistons in a CB750, but the only ones I've come across are comparisons to a SOHC 750, not a DOHC like the one I'm building. Can anyone shed some light on piston dimensions between these two motors?

from what I've gathered, CB900 pistons have a taller deck height than the CBX 1000 ones, by about 0.080" but I don't know how they compare to the DOHC CB750. CBX pistons are also domed pretty good, but I don't know the dome volume. unless someone here has some OEM CB900 pistons and/or CBX pistons laying around that I could measure myself, that would be helpful enough
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Old 03-05-2021, 05:49 PM   #2
Gixxerguy86
Rider. Tuner. Wrencher.
 
Gixxerguy86's Avatar
 
Join Date: Apr 2015
Location: Sugar Land
Feedback Rating: (0)
Posts: 749

Experience: 10+ years
Trackdays: 5

Bike(s):
1986 GSXR 815
2002 Bandit 1200
GSXR 1137cc Frankendragster (SOLD)
various other oil-cooled Suzukis
lots of dirt bikes

Member Garage





https://www.cb1100f.net/modules.php?...wtopic&t=76501

https://forums.sohc4.net/index.php?topic=62926.0
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